Please, don't refer to this product as a "chem" sponge. It contains no chemicals. I have been asked to testify twice in lawsuits where someone essentailly claimed they were poisoned by chem sponges or their house was cotnamainated by chem sponge.
I like soot removal sponge. Some also call it a electrostatic sponge. The most popular designation is dry cleaning sponge.